#include<stdio.h>

int Sum(int n)
{
        int i = 0;
        int sum = 0;
        for(i = 0; i< 10; i++)
        {
                sum += i;
        }
        return sum;
}
int main()
{
        printf("hello world\n");
        int result = Sum(100);
        printf("result  = %d\n", result);
        return 0;
}
